About: Beta-carotene-A possible biomarker in the Martian evaporitic environment: Raman micro-spectroscopic study

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About: Beta-carotene-A possible biomarker in the Martian evaporitic environment: Raman micro-spectroscopic study Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Raman micro-spectroscopy was tested as a nondestructive method of determining the presence of beta-carotene in experimentally prepared evaporitic matrices. Samples prepared by mixing beta-carotene with powdered gypsum, halite and epsomite were analyzed using a 785 nm excitation source. Various concentrations of beta-carotene in the matrices were investigated to determine the lowest beta-carotene content detectable by Raman microspectroscopy. We were able to obtain a clear beta-carotene signal at the 10 mg kg(-1) concentration level-the number of registered beta-carotene Raman bands differed depending on the particular mineral matrix. Spectral signatures of beta-carotene were detected even when analyzing samples containing 1 mg kg(-1) of this molecule. The 10-100 mg kg(-1) of beta-carotene in mineral matrices (halite, epsomite) was detected when analyzed through the monocrystal of gypsum and epsomite, respectively. These results will aid both in-situ analyses on Mars and sample analyses on Earth. Raman micro-spectroscopy was tested as a nondestructive method of determining the presence of beta-carotene in experimentally prepared evaporitic matrices. Samples prepared by mixing beta-carotene with powdered gypsum, halite and epsomite were analyzed using a 785 nm excitation source. Various concentrations of beta-carotene in the matrices were investigated to determine the lowest beta-carotene content detectable by Raman microspectroscopy. We were able to obtain a clear beta-carotene signal at the 10 mg kg(-1) concentration level-the number of registered beta-carotene Raman bands differed depending on the particular mineral matrix. Spectral signatures of beta-carotene were detected even when analyzing samples containing 1 mg kg(-1) of this molecule. The 10-100 mg kg(-1) of beta-carotene in mineral matrices (halite, epsomite) was detected when analyzed through the monocrystal of gypsum and epsomite, respectively. These results will aid both in-situ analyses on Mars and sample analyses on Earth. (en)
Title	Beta-carotene-A possible biomarker in the Martian evaporitic environment: Raman micro-spectroscopic study Beta-carotene-A possible biomarker in the Martian evaporitic environment: Raman micro-spectroscopic study (en)
skos:prefLabel	Beta-carotene-A possible biomarker in the Martian evaporitic environment: Raman micro-spectroscopic study Beta-carotene-A possible biomarker in the Martian evaporitic environment: Raman micro-spectroscopic study (en)
skos:notation	RIV/00216208:11310/09:00014573!RIV10-MSM-11310___
http://linked.open...avai/riv/aktivita	S Z
http://linked.open...avai/riv/aktivity	S, Z(MSM0021620855)
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Jehlička, Jan Osterrothová, Kateřina Vítek, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	304916
http://linked.open...ai/riv/idVysledku	RIV/00216208:11310/09:00014573
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Beta-carotene; biomarkers; Martian evaporitic environmen; Raman micro-spectroscopy (en)
http://linked.open.../riv/klicoveSlovo	biomarkers Beta-carotene Martian evaporitic environmen Raman micro-spectroscopy
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[E2747194DA6B]
http://linked.open...i/riv/nazevZdroje	Planetary and Space Science
http://linked.open...in/vavai/riv/obor	DD
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	57
http://linked.open...iv/tvurceVysledku	Jehlička, Jan Vítek, Petr Osterrothová, Kateřina
http://linked.open...ain/vavai/riv/wos	000265993800007
http://linked.open...n/vavai/riv/zamer	Material flow mechanisms in the upper spheres of the Earth
issn	0032-0633
number of pages	6 (xsd:int)
http://localhost/t...ganizacniJednotka	11310

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